Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 507 · 40 questions

What you do (Dry out, crystals in): 1. An adult pours warm water into a cup. 2. Stir in salt, a spoon at a time, until no more dissolves. 3. Pour the salty water into a shallow dish and lay a string in it. 4. Leave it on a sunny windowsill, out of reach of small children, and check each day.

1. 1.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a piece of string (d) a battery cell
2. 2.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sugar (d) sawdust
3. 3.True or false: sawdust dissolves in water. (a) False (b) True
4. 4.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
5. 5.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) baking soda (d) food colour
7. 7.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sawdust (d) sugar
8. 8.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
9. 9.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
10. 10.True or false: chalk powder dissolves in water. (a) False (b) True
11. 11.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a battery cell (c) turmeric powder (d) a balloon
12. 12.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
13. 13.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
15. 15.🧂 Which of these does not dissolve in water? (a) cooking oil (b) table salt (c) food colour (d) baking soda
16. 16.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) salt crystals form (d) it turns to oil
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a balloon (d) warm water
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) turmeric powder (d) salt
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
21. 21.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
22. 22.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a spoon (c) a balloon (d) a mirror
23. 23.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
25. 25.True or false: baking soda dissolves in water. (a) False (b) True
26. 26.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
27. 27.True or false: yeast is needed for growing salt crystals. (a) True (b) False
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the same dish (b) days to see crystals (c) sunny or shady place (d) the kind of salt
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a mirror (d) a shallow dish
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) sunny or shady place (c) days to see crystals (d) the amount of water
34. 34.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
35. 35.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) sea water evaporates (d) fish make it
36. 36.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) salt (d) a piece of string
38. 38.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) browning lemon ink (c) freezing water (d) melting butter
39. 39.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
40. 40.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) cooking oil (d) sand

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